5G/NR - Reference Signals  

 

 

 

Reference Signals

As in LTE, many types of RS (Refernce Signal) are used in NR and most of them plays similar roles as in LTE. However, there are some important differnces between LTE RS and NR RS. The most important differences can be listed as follows :

  • In NR, there is no CRS (Cell Specific Reference Signal)
  • In NR, there is a new reference signals Phase Tracking Reference Signal, PBCH Reference Signal, Time/Frequency Tracking Reference Signal

List of all NR reference signal can be summarized as follows. The details of each reference signal will be posted as separate page.

Reference Signal

Functionality

3GPP Reference

CSI-RS

CSI aquisition, Beam Management

38.211-7.4.1.5

PDSCH DMRS

Required for PDSCH Demodulation

38.211-7.4.1.1

PUSCH DMRS

Required for PUSCH Demodulation

38.211-6.4.1.1

PDCCH DMRS

Required for PDCCH Demodulation

38.211-7.4.1.3

PUCCH DMRS

Required for PUCCH Demodulation

38.211-6.4.1.3

SRS

Sounding Reference Signal

38.211-6.4.1.4

PBCH DMRS

Required for PBCH Demodulation

38.211-7.4.1.4

PTRS

Used for Phase Tracking for PDSCH

38.211-7.4.1.2

TRS

Used for Time Tracking

38.211-7.4.1.6

Reference

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